My idea of a Sleeper that can run in a "canonball" style race is:
-Stock look (standar colors, nothing of custom paint scenes).
-Stock looking wheels (this cause a great trouble to me, 'couse for me to be a "safe" racer you'll need wide and better tham stock tires).
-Almost near to stock ride height.
-Stock lookin interior.
-Hi performance engine, but you have to think in gas consumption, 'couse the less time you use on the gass station is better.
-Better, but hide, brakes.
I'm still waithing for the parts I need, but meantime I'm planing my build, I hope I'll have something to show in a few days.
Greetings from across the pond!